There are several owners on TUG who have reported that they own at RCI points resorts (but their weeks are not enrolled in points) and use those weeks through PIC. It has also been reported that sales will threaten that if a resort is or becomes a points resort that it will be un enrolled as a threat to buy more developer points. Wyndham has always interpreted that rule to mean the actual deeded week can't be enrolled in any points program- be in Bluegreen, Hilton, Starwood, Worldmark etc. The week in question has to be eligible to exchange through RCI weeks with an actual deposited week and not enrolled in any internal points system or rci points.
The rule is written ambiguously enough that Wyndham could at some point change that interpretation but I don't know if that possibility should be enough of a reason to change your plans.